cdierk/HairIO

Shared Repository for HairIO: hair as interactive material

HairIO: Human Hair as interactive Material

Shared Repository for HairIO: Human Hair as interactive Material

Hardware details

• Microcontroller: Arduino Nano, ordered from AliExpress. Requires these drivers.

Circuit diagram for SFCS from Disney's Touche project, as shared by Illutron

// Illutron take on Disney style capacitive touch sensor using only passives and Arduino // Dzl 2012

//                              10n
// PIN 9 --[10k]-+-----10mH---+--||-- OBJECT
//               |            |
//              3.3k          |
//               |            V 1N4148 diode
//              GND           |
//                            |
//Analog 0 ---+------+--------+
//            |      |
//          100pf   1MOmhm
//            |      |
//           GND    GND

Arduino code

• mux_4052 - newer version of mux that only requires two pins to select between 4 inputs. Uses Disney's Touche that was ported to Arduino.
• touch_sensing_bluefruit_v2 - Currently believe this is what's in the bluetooth-enabled demo box w/ brown hair that can actuate and communicate over bluetooth.

Arduino pinout notes

For mux_4052 code

• pinMode(9, OUTPUT); //-Signal generator pin // digital PWM

• pinMode(8, OUTPUT); //-Sync (test) pin // digital

• pinMode(LED, OUTPUT);

• pinMode(muxApin, OUTPUT); // pin 6, digital PWM

• pinMode(muxBpin, OUTPUT); // pin 5, digital PWM

• pinMode(braidOutput, OUTPUT); // pin 2, digital

• // Also uses Analog 0 later.

  Total: 5 digital pins, 1 analog pin.

For touch_sensing_bluefruit_v2 code

// cap-sense pin

• pinMode(9, OUTPUT); //-Signal generator pin
• pinMode(8, OUTPUT); //-Sync (test) pin
• pinMode(drive, OUTPUT);

//bluetooth:

• BLUEFRUIT_UART_MODE_PIN,
• BLUEFRUIT_UART_CTS_PIN,
• BLUEFRUIT_UART_RTS_PIN

Resources

Instructable for Disney Touche's SFCS

Datasheets and Circuit Info

• 4052 mux from TI
• Arduino Nano CAD files
• SPDT Slide switch datasheet from DigiKey
  • For Eagle, use a 1x3-pin header from Pinhead since they are also 2mm apart.

demo

• Multiple braids w/ BLE
• Single braid w/ BLE